The model of separating the fiber network from the telcos that offer service on it can work of the incentives are well aligned. Many Asian countries, eg Singap

The model of separating the fiber network from the telcos that offer service on it can work of the incentives are well aligned. Many Asian countries, eg Singapore, do this. Or you could put the fox in charge of the hen house and end up in Australia's situation, where local monopolist Telstra owns the phone network and is supposed to play nicely with its competitors.